Ronghua Wu | 14bcaca | 2015-03-16 11:24:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | //#define LOG_NDEBUG 0 |
| 18 | #define LOG_TAG "ProcessInfo" |
| 19 | #include <utils/Log.h> |
| 20 | |
| 21 | #include <media/stagefright/ProcessInfo.h> |
| 22 | |
| 23 | #include <binder/IProcessInfoService.h> |
| 24 | #include <binder/IServiceManager.h> |
| 25 | |
| 26 | namespace android { |
| 27 | |
| 28 | ProcessInfo::ProcessInfo() {} |
| 29 | |
| 30 | bool ProcessInfo::getPriority(int pid, int* priority) { |
| 31 | sp<IBinder> binder = defaultServiceManager()->getService(String16("processinfo")); |
| 32 | sp<IProcessInfoService> service = interface_cast<IProcessInfoService>(binder); |
| 33 | |
| 34 | size_t length = 1; |
| 35 | int32_t states; |
| 36 | status_t err = service->getProcessStatesFromPids(length, &pid, &states); |
| 37 | if (err != OK) { |
| 38 | ALOGE("getProcessStatesFromPids failed"); |
| 39 | return false; |
| 40 | } |
| 41 | ALOGV("pid %d states %d", pid, states); |
| 42 | if (states < 0) { |
| 43 | return false; |
| 44 | } |
| 45 | |
| 46 | // Use process state as the priority. Lower the value, higher the priority. |
| 47 | *priority = states; |
| 48 | return true; |
| 49 | } |
| 50 | |
| 51 | ProcessInfo::~ProcessInfo() {} |
| 52 | |
| 53 | } // namespace android |